Electrical Installation; Water Quality - Toshiba HWS-803XWHM3-E Installation Manual

+00EF99805101_01EN.book Page 18 Monday, June 21, 2010 3:45 PM
Hydro Unit
Water charging
Charge water until the pressure gauge shows 0.2 MPa
(2 bar).
Hydraulic pressure may drop when the trial run begins.
In that case, add water.
Air may enter if the charged hydraulic pressure is low.
Loosen the purge valve cap by two turns to release air.
▼ Fig. 7-18
Loosen the air vent screw of the pump, pull out air in
the pump, and tighten again.
Loosen the cap of the pressure relief valve to release
air.
Water may come out of the pressure relief valve.
Release the air completely from the water circuit.
Failure to do so may disable correct operation.

Water quality

The water used must satisfy EN directive 98/83 EC.
Piping insulation
It is recommended that insulation treatment be applied
to all pipes. To perform optional cooling operation,
apply insulation treatment of 20 t or more to all pipes.

Electrical Installation

• Ensure electrical circuits are isolated before
commencing the electrical installation.
• The electrical installation must be completed by a
qualified electrician.
• The electrical installation must comply to all Local,
National and International electrical installation
Loosen 2
regulations.
turns for
• This product must be earthed in accordance with
proper
venting
Local, National and International electrical installation
regulations.
• The Hydro Unit must be connected to a dedicated
power supply for the back up heater circuit.
• The electrical supply must be protected by a suitably
sized over current protection device (fuse, MCB etc)
and an earth leakage protection device.
• The Hydro Unit must be connected to the mains power
supply using a isolating switch which disconnects all
poles and has a contact separation of at least 3 mm.
• The cord clamps, attached to the Hydro Unit, must be
used to secure the electrical cables.
• Wrong connection of electrical cables may result in
electrical component failure or fire.
• Ensure the electrical cables are sized in accordance
with the installation instructions.
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Installation Manual
WARNING
CAUTION
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